A mobile intelligent welding robot

Abstract

The present invention discloses a mobile intelligent welding robot, which relates to the technical field of welding robots and comprises a base, wherein a storage box is fixedly installed on the bottom of the base, a shell is fixedly installed on the top of the base, a top cover is fixedly installed on the top of the shell, the square frame is fixedly installed on the top of the base, the servo motor is fixedly installed on the surface of the square frame, the output end of the servo motor rotates and penetrates the inner and outer walls of the square frame, the screw rod is fixedly installed on the output end of the servo motor, a spiral groove is opened on the circumferential surface of the screw rod, the sleeve rod is slidably installed on the inner wall of the spiral groove, the clamp plate 1 is fixedly installed on the circumferential surface of the sleeve rod, and the movement of the clamp plate 2 will drive the positioning clamp to move in a direction away from the servo motor, so that the workpiece can be positioned while being clamped, the processing accuracy of the workpiece is higher, and the success rate of workpiece processing is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of welding robots, in particular to a mobile intelligent welding robot. Background Art

[0002] The invention relates to a mobile intelligent welding robot, and in particular to an intelligent robot for arc welding of metal structures in heavy machinery industries such as shipbuilding, marine engineering, steel structure bridges, steel structure buildings, chemical machinery and lifting machinery. The patent with the patent announcement number CN106077900B relates to a mobile intelligent welding robot, including: a mobile trolley, a lifting device, a manipulator, a welding gun and a welding gun head mechanism. The lifting device is installed on the mobile trolley, the manipulator is installed on the lifting device, the welding gun and the welding gun head mechanism are installed on the manipulator, and the manipulator includes an arm, an elbow and a hand connected in sequence; a position measuring device is installed on the mobile trolley, and a visual recognition positioning weld tracker and a welding self-adjuster are installed on the welding gun head mechanism. The mobile intelligent welding robot with the above structure solves the problems of scarcity of arc welding technicians, unstable quality, low efficiency and high cost in metal structure connection in heavy machinery industries such as shipbuilding, marine engineering, bridge steel structure, steel structure construction, chemical machinery and lifting machinery.

[0003] The above patent solves the problems of shortage of arc welding technicians, unstable quality, low efficiency and high cost in metal structure connection in heavy machinery industries such as shipbuilding, marine engineering, bridge steel structure, steel structure construction, chemical machinery and lifting machinery. However, when the welding robot welds the workpiece, the position of the workpiece needs to be fixed. In high-intensity operations, frequent fixation of the workpiece is time-consuming and has low work efficiency. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a mobile intelligent welding robot, which solves the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a mobile intelligent welding robot, comprising a base, a supporting foot is fixedly installed at the bottom of the base, a storage box is fixedly installed at the bottom of the base, a shell is fixedly installed at the top of the base, a top cover is fixedly installed at the top of the shell, and a clamping device, a welding device and a protective device are arranged on the top of the base; Wherein, the clamping device comprises: a square frame, a servo motor, a screw rod, a sleeve rod, a clamp plate 1, a No. 1 spring, a clamp plate 2, a positioning clamp, a telescopic rod and an arc surface block, wherein the square frame is fixedly mounted on the top of the base, the servo motor is fixedly mounted on the surface of the square frame, the output end of the servo motor rotates and passes through the inner and outer walls of the square frame, the screw rod is fixedly mounted on the output end of the servo motor, the circumferential surface of the screw rod is provided with a spiral groove, the sleeve rod is slidably mounted on the inner wall of the spiral groove, the clamp plate 1 is fixedly mounted on the circumferential surface of the sleeve rod, the No. 1 spring is fixedly mounted on the surface of the clamp plate 1, the clamp plate 2 is connected to the clamp plate 1 through the No. 1 spring, the surface of the clamp plate 2 is provided with a rotation groove, the positioning clamp is rotatably mounted on the inner wall of the rotation groove, the telescopic rod is fixedly mounted on a side of the clamp plate 1 close to the second clamp plate, and the arc surface block is fixedly mounted on the output end surface of the telescopic rod, the movement of the clamp plate 2 will drive the telescopic rod to move in the direction away from the servo motor, the movement of the telescopic rod will drive the arc surface block to move in the direction of the workpiece, the movement of the arc surface block will contact the workpiece, and the movement of the arc surface block will push the workpiece to move in the direction inside the square frame.

[0006] According to the above technical solution, the first clamping plate is in contact with the second clamping plate, and a No. 2 spring is arranged inside the telescopic rod, and the No. 2 spring drives the output end of the telescopic rod to reset.

[0007] According to the above technical scheme, the welding device includes: a sliding groove, a sliding seat, a hollow box, a mechanical arm, a welding gun, a positioning block, a long rod and a driving device. The sliding groove is opened at the top of the base, the sliding seat is slidably installed on the inner wall of the sliding groove, the hollow box is fixedly installed on the top of the sliding seat, the mechanical arm is rotatably installed on the surface of the hollow box, the welding gun is arranged on the surface of the mechanical arm, the positioning block is fixedly installed on the circumferential surface of the sliding seat, the long rod is fixedly installed on the surface of the clamping plate, and the driving device is arranged on the circumferential surface of the sliding seat. The driving device will drive the sliding seat to move in the direction of the workpiece, the movement of the sliding seat will drive the hollow box to move, the movement of the hollow box will drive the mechanical arm to move, the movement of the mechanical arm will drive the welding gun to move, and the movement of the welding gun can perform all-round welding on the workpiece.

[0008] According to the above technical scheme, the welding device also includes: a recovery tank, an oil storage tank, a switch, a nozzle, a protrusion and a connecting pipe, the recovery tank is fixedly installed on the top of the sliding seat, the oil storage tank is fixedly installed on the top of the inner wall of the hollow box, the switch is arranged at the bottom of the oil storage tank, the nozzle is arranged at the bottom of the oil storage tank, the protrusion is fixedly installed on the circumferential surface of the robotic arm, the oil storage tank and the recovery tank are connected through a connecting pipe, and the lubricating oil in the oil storage tank will flow out through the nozzle after the switch is turned, and the lubricating oil will lubricate the connection between the robotic arm and the hollow box to prevent the robotic arm from being worn and damaged due to long-term work. The lubricating oil will flow to the bottom with gravity and then flow into the interior of the recovery tank, and the lubricating oil in the recovery tank is extracted through the connecting pipe and flows into the interior of the oil storage tank.

[0009] According to the above technical solution, the protrusion contacts the switch, and a No. 3 spring is arranged between the switch and the oil storage tank, and the switch is driven to reset by the No. 3 spring.

[0010] According to the above technical solution, the positioning block is in contact with the long rod, and a recovery pump is provided inside the recovery tank, and the lubricating oil inside the recovery tank is extracted by the recovery pump.

[0011] According to the above technical scheme, the protective device includes: a protective door, a handle, a rotating shaft, a rotating rod, a limiting rod, a U-shaped rod, an arc rod and a penetrating rod. The protective door is slidably installed on the surfaces of the outer shell and the top cover, the handle is fixedly installed on the side of the protective door away from the outer shell, the rotating shaft is rotatably installed on the inner wall of the outer shell, the rotating rod is fixedly penetrated through the inner and outer walls of the rotating shaft, the limiting rod is fixedly installed on the surface of the rotating rod, the U-shaped rod is fixedly installed on the side of the protective door away from the handle, the penetrating rod rotates and penetrates the inner and outer walls of the outer shell, the arc rod is fixedly installed on the circumferential surface of the penetrating rod, and the penetrating rod is manually rotated, the rotation of the penetrating rod will drive the rotation of the arc rod, the rotation of the arc rod will drive the rotation rod to rotate, the rotation of the rotating rod drives the limiting rod to rotate, and the U-shaped rod is no longer limited after the limiting rod is rotated.

[0012] According to the above technical solution, a No. 2 torsion spring is arranged between the rotating shaft and the housing, the limiting rod is in contact with the U-shaped rod, and the rotating shaft is driven to reset by the No. 2 torsion spring.

[0013] The present invention provides a mobile intelligent welding robot. It has the following beneficial effects: (1) The invention locates the workpiece by rotating the positioning clamp, and clamps the workpiece by moving the clamping plate, so that the workpiece is positioned while being clamped, thereby improving the processing accuracy of the workpiece and ensuring the success rate of workpiece processing. The arc surface block moves to contact the workpiece, and the movement of the arc surface block pushes the workpiece to move toward the inside of the square frame, so that the workpiece can be clamped even when facing an irregularly shaped workpiece, thereby improving the practicality and extensiveness of the device.

[0014] (2) The invention drives the welding gun to move by the movement of the robot arm. The movement of the welding gun can weld the workpiece in all directions, increase the welding angle, and improve the comfort during welding. The connection between the robot arm and the hollow box is lubricated by the lubricating oil to prevent the robot arm from being worn and damaged due to long-term work. The lubricating oil flows to the bottom with gravity and then flows into the inside of the recovery tank. The lubricating oil in the recovery tank is extracted through the connecting pipe and flows into the inside of the oil storage tank. The lubricating oil can be recovered and reused, thereby reducing production input and ensuring production profits.

[0015] (3) This invention protects the interior of the shell by moving the protective door toward the bottom, thereby ensuring that the workers will not be injured by the splash of welding slag during welding, thereby improving the protection effect. The rotation of the rotating rod drives the limit rod to rotate. After the limit rod rotates, it no longer limits the U-shaped rod, so that the protective door will automatically lock during welding, and the lock can be released through the device, thereby improving the practicality and safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the housing of the present invention; Figure 3 It is a schematic diagram of the structure of the clamping device of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of a square frame of the present invention; Figure 5 This is a schematic diagram of the position relationship structure of the U-shaped rod of the present invention; Figure 6 It is a schematic diagram of the structure of the protective device of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure of part A.

[0017] In the figure: 1. base; 2. supporting feet; 3. storage box; 4. shell; 5. top cover; 61. square frame; 62. servo motor; 63. screw rod; 64. sleeve rod; 65. clamp plate one; 66. spring one; 67. clamp plate two; 68. positioning clamp; 69. telescopic rod; 610. arc block; 71. sliding groove; 72. sliding seat; 73. hollow box; 74. mechanical arm; 75. welding gun; 76. positioning block; 77. long rod; 78. driving device; 79. recovery tank; 710. oil storage tank; 711. switch; 712. nozzle; 713. bump; 714. connecting pipe; 81. protective door; 82. handle; 83. rotating shaft; 84. rotating rod; 85. limiting rod; 86. U-shaped rod; 87. arc rod; 88. through rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 4 One embodiment of the present invention is: a mobile intelligent welding robot, including a base 1, a supporting foot 2 is fixedly installed at the bottom of the base 1, a storage box 3 is fixedly installed at the bottom of the base 1, a shell 4 is fixedly installed on the top of the base 1, a top cover 5 is fixedly installed on the top of the shell 4, and a clamping device is arranged on the top of the base 1, and the clamping device includes: a square frame 61, a servo motor 62, a screw rod 63, a sleeve rod 64, a clamping plate 1 65, a spring 1 66, a clamping plate 2 67, a positioning clamp 68, a telescopic rod 69 and an arc block 610, the square frame 61 is fixedly installed on the top of the base 1, the servo motor 62 is fixedly installed on the surface of the square frame 61, the output end of the servo motor 62 rotates through the inner and outer walls of the square frame 61, and the screw rod 63 is fixedly installed at the output end of the servo motor 62 A spiral groove is provided on the circumferential surface of the screw rod 63, and the sleeve rod 64 is slidably installed on the inner wall of the spiral groove. The clamp plate 1 65 is fixedly installed on the circumferential surface of the sleeve rod 64. The No. 1 spring 66 is fixedly installed on the surface of the clamp plate 1 65. The second clamp plate 67 is connected to the first clamp plate 65 through the No. 1 spring 66. A rotating groove is provided on the surface of the second clamp plate 67. The positioning clamp 68 is rotatably installed on the inner wall of the rotating groove, so that the workpiece can be positioned while being clamped, so that the processing accuracy of the workpiece is higher and the success rate of the workpiece processing is guaranteed. The telescopic rod 69 is fixedly installed on the side of the clamp plate 1 65 close to the second clamp plate 67, and the arc block 610 is fixedly installed on the output end surface of the telescopic rod 69, so that when facing an irregularly shaped workpiece, the workpiece can also be clamped, thereby improving the practicability and extensiveness of the device.

[0020] The first clamping plate 65 is in contact with the second clamping plate 67. A second spring is arranged inside the telescopic rod 69, and the output end of the telescopic rod 69 is driven by the second spring to reset.

[0021] When the present embodiment is working: the workpiece is placed inside the square frame 61, and then the servo motor 62 is started. The rotation of the output end of the servo motor 62 drives the screw rod 63 to rotate, and the rotation of the screw rod 63 drives the reciprocating thread groove to rotate. The rotation of the reciprocating thread groove drives the sleeve rod 64 to move back and forth. When the sleeve rod 64 moves away from the servo motor 62, the movement of the sleeve rod 64 drives the clamp plate 1 65 to move away from the servo motor 62. The movement of the clamp plate 1 65 away from the servo motor 62 drives the No. 1 spring 66 to move away from the servo motor 62. The movement of the No. 1 spring 66 away from the servo motor 62 drives the clamp plate 2 67 to move away from the servo motor 62. The movement of the clamp plate 2 67 drives the positioning clamp 68 away from the servo motor 62. The positioning clamp 68 moves in the direction of the workpiece after it moves, and the positioning clamp 68 is affected by the obstruction of the workpiece, so that the positioning clamp 68 rotates, and the rotation of the positioning clamp 68 will locate the position of the workpiece, and the movement of the second clamp 67 will clamp the workpiece, so that the workpiece will be positioned while being clamped, so that the processing accuracy of the workpiece is higher, and the success rate of workpiece processing is guaranteed. The movement of the second clamp 67 will drive the telescopic rod 69 to move away from the servo motor 62, and the movement of the telescopic rod 69 will drive the arc block 610 to move toward the workpiece, and the arc block 610 will contact the workpiece when it moves, and the arc block 610 will push the workpiece to move toward the inside of the square frame 61, so that when facing an irregularly shaped workpiece, the workpiece can also be clamped, thereby improving the practicability and extensiveness of the device.

[0022] See also Figure 1-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, a welding device and a protective device are arranged on the top of the base 1, wherein the welding device comprises: a sliding groove 71, a sliding seat 72, a hollow box 73, a mechanical arm 74, a welding gun 75, a positioning block 76, a long rod 77 and a driving device 78, the sliding groove 71 is opened on the top of the base 1, the sliding seat 72 is slidably installed on the inner wall of the sliding groove 71, the hollow box 73 is fixedly installed on the top of the sliding seat 72, the mechanical arm 74 is rotatably installed on the surface of the hollow box 73, the welding gun 75 is arranged on the surface of the mechanical arm 74, the positioning block 76 is fixedly installed on the circumferential surface of the sliding seat 72, the long rod 77 is fixedly installed on the surface of the clamping plate 65, and the driving device 78 is arranged on the circumferential surface of the sliding seat 72, so as to increase the welding angle and improve the comfort during welding.

[0023] The welding device also includes: a recovery tank 79, an oil storage tank 710, a switch 711, a nozzle 712, a bump 713 and a connecting pipe 714. The recovery tank 79 is fixedly installed on the top of the sliding seat 72, the oil storage tank 710 is fixedly installed on the top of the inner wall of the hollow box 73, the switch 711 is arranged at the bottom of the oil storage tank 710, the nozzle 712 is arranged at the bottom of the oil storage tank 710, the bump 713 is fixedly installed on the circumferential surface of the robot arm 74, and the oil storage tank 710 is connected to the recovery tank 79 through the connecting pipe 714, so that the lubricating oil can be recovered and reused, thereby reducing production input and ensuring production profits.

[0024] The protrusion 713 contacts the switch 711 , and a No. 3 spring is provided between the switch 711 and the oil storage tank 710 , and the No. 3 spring drives the switch 711 to reset.

[0025] The positioning block 76 is in contact with the long rod 77 , and a recovery pump is provided inside the recovery tank 79 , and the lubricating oil inside the recovery tank 79 is extracted by the recovery pump.

[0026] The protective device includes: a protective door 81, a handle 82, a rotating shaft 83, a rotating rod 84, a limiting rod 85, a U-shaped rod 86, an arc rod 87 and a penetrating rod 88. The protective door 81 is slidably mounted on the surface of the outer shell 4 and the top cover 5, the handle 82 is fixedly mounted on the side of the protective door 81 away from the outer shell 4, the rotating shaft 83 is rotatably mounted on the inner wall of the outer shell 4, the rotating rod 84 is fixedly penetrated through the inner and outer walls of the rotating shaft 83, the limiting rod 85 is fixedly mounted on the surface of the rotating rod 84, the U-shaped rod 86 is fixedly mounted on the side of the protective door 81 away from the handle 82, the penetrating rod 88 rotates and penetrates the inner and outer walls of the outer shell 4, and the arc rod 87 is fixedly mounted on the circumferential surface of the penetrating rod 88, so that the protective door 81 will automatically lock when welding is performed, and the lock can be released by the device, thereby improving the practicability and safety of the device.

[0027] A second torsion spring is provided between the rotating shaft 83 and the housing 4 , and the limiting rod 85 is in contact with the U-shaped rod 86 , and the rotating shaft 83 is driven to reset by the second torsion spring.

[0028] When the present embodiment is working, the movement of the clamping plate 65 will drive the long rod 77 to move. After the long rod 77 moves, it will no longer contact the positioning block 76. After the long rod 77 no longer contacts the positioning block 76, the long rod 77 will no longer limit the positioning block 76. After the positioning block 76 loses its limit, the driving device 78 is started. The driving device 78 will drive the sliding seat 72 to move in the direction of the workpiece. The movement of the sliding seat 72 will drive the hollow box 73 to move. The movement of the hollow box 73 will drive the mechanical arm 74 to move. The movement of the mechanical arm 74 will drive the welding gun 75 to move. The movement of the welding gun 75 can weld the workpiece in all aspects, increase the welding angle, and improve the comfort during welding. When the mechanical arm 74 rotates, the mechanical arm The rotation of 74 will drive the protrusion 713 to rotate, and the rotation of protrusion 713 will contact with switch 711. The rotation of protrusion 713 will drive the switch 711 to rotate. After the switch 711 rotates, the lubricating oil in the oil storage tank 710 will flow out through the nozzle 712. The lubricating oil will lubricate the connection between the mechanical arm 74 and the hollow box 73 to prevent the mechanical arm 74 from being worn and damaged due to long-term operation. The lubricating oil will flow to the bottom with gravity and will flow into the inside of the recovery tank 79. The lubricating oil in the recovery tank 79 is extracted through the connecting pipe 714 and flows into the inside of the oil storage tank 710. The lubricating oil can be recovered and reused repeatedly, thereby reducing production input and ensuring production profits.

[0029] Manually pull the handle 82 toward the bottom, and the movement of the handle 82 toward the bottom will drive the protective door 81 toward the bottom. After the protective door 81 moves toward the bottom, it will protect the interior of the shell 4, ensuring that the staff will not be injured by the splash of welding slag during welding, thereby improving the protection effect. The movement of the protective door 81 toward the bottom will drive the U-shaped rod 86 toward the bottom, and the driving device 78 will no longer block the rotating rod 84 after it moves. After the rotating rod 84 is no longer blocked, the No. 2 torsion spring is reset to drive the rotating shaft 83 to rotate, and the rotation of the rotating shaft 83 will The limit rod 85 is driven to rotate. After the limit rod 85 rotates, it will contact the U-shaped rod 86, so that the limit rod 85 limits the U-shaped rod 86. The through rod 88 is manually rotated. The rotation of the through rod 88 drives the arc rod 87 to rotate. The rotation of the arc rod 87 drives the rotating rod 84 to rotate. The rotation of the rotating rod 84 drives the limit rod 85 to rotate. After the limit rod 85 rotates, it no longer limits the U-shaped rod 86, so that the protective door 81 will be automatically locked during welding, and the lock can be released by the device, thereby improving the practicability and safety of the device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mobile intelligent welding robot, comprising a base (1), characterized in that: A supporting foot (2) is fixedly mounted on the bottom of the base (1), a storage box (3) is fixedly mounted on the bottom of the base (1), a shell (4) is fixedly mounted on the top of the base (1), a top cover (5) is fixedly mounted on the top of the shell (4), and a clamping device, a welding device and a protective device are arranged on the top of the base (1); The clamping device comprises: a square frame (61), a servo motor (62), a screw rod (63), a sleeve rod (64), a clamp plate 1 (65), a spring (66), a clamp plate 2 (67), a positioning clamp (68), a telescopic rod (69) and an arc surface block (610), wherein the square frame (61) is fixedly mounted on the top of the base (1), the servo motor (62) is fixedly mounted on the surface of the square frame (61), the output end of the servo motor (62) rotates and penetrates the inner and outer walls of the square frame (61), the screw rod (63) is fixedly mounted on the output end of the servo motor (62), and the circumferential surface of the screw rod (63) is opened. A spiral groove is provided, the sleeve rod (64) is slidably mounted on the inner wall of the spiral groove, the clamp plate 1 (65) is fixedly mounted on the circumferential surface of the sleeve rod (64), the spring No. 1 (66) is fixedly mounted on the surface of the clamp plate 1 (65), the clamp plate 2 (67) is connected to the clamp plate 1 (65) through the spring No. 1 (66), a rotating groove is provided on the surface of the clamp plate 2 (67), the positioning clamp (68) is rotatably mounted on the inner wall of the rotating groove, the telescopic rod (69) is fixedly mounted on a side of the clamp plate 1 (65) close to the clamp plate 2 (67), and the arc block (610) is fixedly mounted on the output end surface of the telescopic rod (69).

2. A mobile intelligent welding robot according to claim 1, characterized in that: The first clamping plate (65) is in contact with the second clamping plate (67), and a second spring is arranged inside the telescopic rod (69).

3. A mobile intelligent welding robot according to claim 2, characterized in that: The welding device comprises: a sliding groove (71), a sliding seat (72), a hollow box (73), a mechanical arm (74), a welding gun (75), a positioning block (76), a long rod (77) and a driving device (78), wherein the sliding groove (71) is opened at the top of the base (1), the sliding seat (72) is slidably mounted on the inner wall of the sliding groove (71), the hollow box (73) is fixedly mounted on the top of the sliding seat (72), the mechanical arm (74) is rotatably mounted on the surface of the hollow box (73), the welding gun (75) is arranged on the surface of the mechanical arm (74), the positioning block (76) is fixedly mounted on the circumferential surface of the sliding seat (72), the long rod (77) is fixedly mounted on the surface of the clamping plate (65), and the driving device (78) is arranged on the circumferential surface of the sliding seat (72).

4. A mobile intelligent welding robot according to claim 3, characterized in that: The welding device further comprises: a recovery tank (79), an oil storage tank (710), a switch (711), a nozzle (712), a bump (713) and a connecting pipe (714); the recovery tank (79) is fixedly mounted on the top of the sliding seat (72); the oil storage tank (710) is fixedly mounted on the top of the inner wall of the hollow box (73); the switch (711) is arranged at the bottom of the oil storage tank (710); the nozzle (712) is arranged at the bottom of the oil storage tank (710); the bump (713) is fixedly mounted on the circumferential surface of the mechanical arm (74); and the oil storage tank (710) and the recovery tank (79) are connected via the connecting pipe (714).

5. The mobile intelligent welding robot according to claim 4, characterized in that: The protrusion (713) contacts the switch (711), and a No. 3 spring is provided between the switch (711) and the oil storage tank (710).

6. The mobile intelligent welding robot according to claim 5, characterized in that: The positioning block (76) is in contact with the long rod (77), and a recovery pump is provided inside the recovery tank (79).

7. The mobile intelligent welding robot according to claim 6, characterized in that: The protective device comprises: a protective door (81), a handle (82), a rotating shaft (83), a rotating rod (84), a limiting rod (85), a U-shaped rod (86), an arc-shaped rod (87) and a penetrating rod (88); the protective door (81) is slidably mounted on the surface of the outer shell (4) and the top cover (5); the handle (82) is fixedly mounted on a side of the protective door (81) away from the outer shell (4); the rotating shaft (83) is rotatably mounted on the inner wall of the outer shell (4); the rotating rod (84) is fixedly penetrated through the inner and outer walls of the rotating shaft (83); the limiting rod (85) is fixedly mounted on the surface of the rotating rod (84); the U-shaped rod (86) is fixedly mounted on a side of the protective door (81) away from the handle (82); the penetrating rod (88) is rotatably penetrated through the inner and outer walls of the outer shell (4); and the arc-shaped rod (87) is fixedly mounted on the circumferential surface of the penetrating rod (88).

8. The mobile intelligent welding robot according to claim 7, characterized in that: A second torsion spring is provided between the rotating shaft (83) and the housing (4), and the limiting rod (85) is in contact with the U-shaped rod (86).

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